Tube-rolling apparatus.



G. i. THUST.

TUBE ROLLING APPARATUS.

APPLICATION FILED MAR. 7.. IsIe.

Paented Sept. 18, 1917.

5 SHEETS-SHEET l.

kl l'/X/ @.1. THUST.

TUBE ROLLING APPARATUS.

APPLICAUON HLED MAR.1.1916.

1 ,240,51 3. Patented Sept. 18, 1917.

` 5 SHEETS-sauf 2.'

fnv/Weniger: 5602?@ as Z' l. THUST."

TUBE ROLLINIG APPARATUS. APPLICATION m2o MAR. z. |916.

l ,240 ,5 1 3 .Patented Sept. 18, 1917.

5 SHEETS-SHEET 3.

6.1. THUST.

TUBE ROLLING APPARATUS.

APPLlcATloN FILED MAR.1.1916.

1 ,240,5 1 3 Patented Sept. 18, 1917.

5 SHEETS-SHEET 4.

GERGE J'. TRUST, OZ? MELWAIZEE, WESCONSIN.

TUBE-.ROLLENG AFRATUS.

Speceaton of Letters atent.

raeemea sept.4 is, ieri.

Application died March 1916. Serial No. $2,546.

To all whom t may concern:

Be it known that I, GEORGE tl. Timer, e citizen of the United States, residing at Milwaukee, in the lcounty of Milwaukee and State of Wisconsin, have invented eertain new and useful Improvements in Tube- .Rolling Apparatus, of which the following is a specication. l

This invention relates to improvements in tube rolling apparatus, and has for an object to provide new and improved apparatus of the class described, by-the use of which l am enabled to produce a finished ube in a minimum of time and with a minimum of labor and consequent expense of rolling.

Hitherto it has been necessary to subject the billet after piercing to a number of operations causing a lack of continuity in rolling, and in many instances requiring one or more reheats of the tube. vMy apparatus overcomes these objections and, as stated, reduces the number of operators required to produce the tube.

Another object of my invention is to provide an apparatus of this a mandrel is used in conjunction with planishing or forming rolls, the yinandrel being a vconsequence may longer than the tube mounted upon a bar, this bar being held at one end while the tube is being rolled over the mandrel, the rolls and mandrel being so arranged that the tube, is drawn off the mandrel rather than pushed over. By this improved feature the mandrel carrying bar issubjected to tensile stresses only, and as be made much lighter and smaller in size7 reducing the amount of power required and the cost ofthe bar. Furthermore, as will -be morefully set forth below, by so handling the 'tubes vand bar-,it is necessary to have' the bar only slightly l to be rolled, in contradistinction to the bars used .in presentfgliiy ractipe where they are more than twice as ong as the tube length. l

'Another object resides in the provision of specic mechanism and apparatusto carry out the above objects, as will be more fully set forth below, and as shown in the accompanying drawings, in which- Figure 1 is a general plan or diagramnatic outlay of my apparatus;

Fig. 2 is a plan view on an enlarged scale of aportion of the apparatus;

F ig. 3 is a similar view of another portion thereof;

nature in whichA y'sha fting, is

41g. l is an enlarged vertical section of at.' gripping and holding mechanism; ig. 5 is an end elevation of a portion of portion of mechanisrn; l 'v Fig. 9 iH a plan view of a pair of controlling Ur" s,

Fig. 10 is a side elevation of the same;

Fig. 11 is an end elevation of the same; and

Fie. 12 is a side elevation of the mandrel end liar, a portion thereof being shown in section. I

Like numerals refer to like elements throughout the drawings, in which 11 designates a'heating furnace into which pierced billets or dough 'tubes are int oduced after piercing thereof for proper heating before the planishing or` rolling ofthe tube. designates generali. to which run guide-ways 13 from the heating furnacell, see Fig. 1. A plurality of rotating conveyer rolls 14 are mounted in the pit 12, each of said rolls being mounted With driven by'a bevel pinion 15 mounted'upon ftheshaft 16, as shown in Fig. 2. Main driving shafts 17 and 18 are l0- cated in thepit 12, being provided with gears 17a, 18l at their ends which mesh with the main driving gear 19 carried on the power shaft 20. operate to drive the planishing rolls 21,

throughk the mediumpf shafting and These are vskew mounted, as

versal joints, as, shown inFig; 1. planishing rolls ..21 clearly shown in F ig. 3, and carried in suitable bearing framework, generally indicated by numerall 25. il, shaft 24, operatively attached through one yof the rolls 21to the shaft 17 by means of universal'joihts jmd hereinafter described. Mounted upon suit- 'able supports 26 at the operators end of the pit, is provided the bar anisni generally indicated and shown clearly in Figs. mechanism comprises the .apertured internally bored casing 27a carrying theubearing plate 27b at one end thereof and 'provided with bushings or bearings 27c in its interior, tbc rotatable sleeve 2id being iournaled retaining mechby numeral` 27,

12. a pit or large trough i rllhes'e shafts 17 and 18L `ovided for a purpose to bev 4 and 5...This

I shoulder 31i of thecrank arm 31e after the bers 262 'The sleeve Q7 ffii: the

therein. The sleeve 27d is provided with the bearing plate 27e spaced from plate 27h and balls 28 or the like are pitovided, this construction constituting a thrust bearing. At one end of the sleeve 27d arev provided the T- shaped jaw members 29 abutting against the end of sleeve 27d and arranged in such Wise as to be capable of inward and outward movement. A head 30 is slidably mounted on the end of the sleeve 27, the saine being provided with suitable slots to engage the eads of jaw members 29. eipaced slightly therefrom is a collar 30a the extended screws 30', shown in F ig. 5. This collar 30 is grooved at 30C for engagement by pins 3()d mounted in the clutch ring 3l which is pivoted at '31a to a iange member 32 secured to thensupportingmemis provided With the seats or slots 27h in which are pivotally mounted the dogs or cams 34 abutting against Wear-pins 35 carried by the screws 35a.

The construction above describe-dis so arranged that, for example, when the clutch ring 31 is moved to the position shown in dotted lines in Fig. 4l, the head 30 Will be carriedv rearwardly by means orP the collar 80, dogs or cams 34 being moved outwardly to the position indicated in dotted lines.- At the same time the jaw members 29 are moved oixt-Wardly by reason of their coaction with the inclined slots in head 30. To operate the clutch ring 31, I provide a toggle 31C pivoted at one end at 31d to the upper part of clutch ring 8l. At its other end this toggle 31 is pivotally attached to the short crank arm 31 which is carried by shaft 81. mounted on the shaft 31t is the operating handle 31g provided with the striker lug' 31h arranged to contact with the lug or desired amount of rotation thereof. A. tension rod 31k extends through an aperture in the iixed upstanding flange 27m and is pivoted at one end at the connection or toggle 31 and clutch ring 31, see Fig. 4:. The spring is coiled around tension rod 31k and abuts against the ange 27m, being held on said rod 3lk by means of the collar and nut 31m. Levers, crank and toggle are so arranged that when operating handle 31g is at one limit of its travel, as shown in full lines in Fig. 4, the crank 31e and toggle 31 Will have slightly passed dead center, and Will be held locked in such position by means of the tension rod 31k and spring 40. Similarly the device 'Will be held in the position indicated in dottediines, as Will be apparent. A yoke 4 1 extends outwardly from the end of the member 27 and is provided with e striker stop or 'bolt 41, for a purpose to be hereinafter described.

Foruse with my apparatus provide a. mandrel having the reduced end d5@ threadedly engaging the threaded soclret of secured thereto by Rotatably Y' Lettonie the mandrel carrying bar d, which is or less diameter than the mandrel 45 and is provided with the enlargedhead 6a. Tfur-L ..;g the rolling of a tube this head e262 is held by the jaws Q9, the mechanism being in the position shown in Fig'. el, proper movement oftheoperating handlc 31g causing collar 30a to force the jaws Q9 to closing position through the medium of dogs and head 30, as will be obvious. position the head il? and attached mechanism freely rotates with the bar '-ii, thrust bearings 2o serving to taire care of the thrust resulting from rolling of the tube.

Located adjacent the planishing rolls 21 is a pair of slidable gate members having, when in closed position as shoivnin E1-g1 -t4, the cental aperture 50 slightly at one end, meshing with a driving gear 56Y carried on shaft 57 which terminates in an operating or hand Wheel 58 located at station A, see 2. It will be apparent that rotation of wheel 58 in one direction Will operate to bring the gate memberstlto the position shov in Figft, vvhile opposite rotation will move them apart.

Located adjacent the gates 50 and journaled in the" carrier blocks 52 are the bar returning rolls 60 carried upon suitable shafts upon which are also niounted the bevel gears 51, driven Afrom bevel 62 feathered upon cross shaft 63 which. carries the bevel gear G-'l driven by bevel ,gear 65, in turn carried upon shaft 66 carrying gear 67, which is driven by gear 68 on the main" driving shaft 18. The bevel gears are oppositely disposed so that the return rolls 60 rotate in opposite directions. At the same time it will be apparent, from an en amination ofthe arrangement of the gearing, that these rolls 6G, when in Contact with the bar 46, Will serve to return the 'same toward the member 27 against the rotatory movement of the ituide rolls Coil springs 70 act against the shoulders of the bushing blocks 5d which are mounted in the carrier blocks 52 to permit a small amount or' relative movement therebetween, so that in returning a bar, inequalities in the diameter thereof, or' other causes, Will. be compensated for by the springs 'TOY/ithout injury to the apparatus.

in rolling a tube the heatedbillet In this i j jaws 29 move to i tion.

the operator at station A closes reactie is dropped from oyen l1, on to the conveyor rolls 14, the bar 46 having previously moved therefrom, vas' will be explaned below, and ates 50, through the medium of hand w eel 58, which at the same-time moves the returning rolls into contact with the mandrel carrying bar. The gates 50 prevent the passage of the tube indicated by numeral '76, in Fig. 3 beyond such gates. At the saine time the mandrel carrying bar 46 is moved back by rollers' 60v through the tube blank until operator at A is enabled to move operating handle 31g to the position shown in full lines in Fig.'f4, by which operation members or preventing longitudinal movement of mandrel bar 46, whereupon the gates 50 may be moved and the tube 'l' 6 conveyed to the lanishing rolls 2l. The mandrel 45 an bar 46 are so arran ed that the ,former is held between the rolls 21 in the position shown in Fig. 3, and as the tube 76 is conveyed thereto it is seized orl ripped by the rolls 2l, and, owing to their it is not only rotated but drawnlover the mandrel 45, this operation resulting in planishing or sizing the tube, at the same time drawing it down to the proper dimensions. During this operation, as explained above, the bar 46 is held under tension and movement thereof is prevented save' for `its rota- Beyond the planishing rolls 2l-are provided a-second series of conveyor-rollers 80 driven by bevel gearing from a shaft 81, in vturn driven from a suitable source of power.

At B, see Figs. land 9, is provided a seeond station for the operation df the followingfine'ehanisin:v A gate 90 is provided, the saine consistingof the flat plate 90 carried by the yoke 90b which has its arms attached to the rotatable shaft 90C, carrying the bevel gear 909.l This gear meshes with a secondgear 91a A'carried upon the tube or sleeve 91b towhich is attached the seegFigsl, 10 and 1l. The shaft90 is journaled in. the 11p-right pedestals '90a which are also provided with the portions 9Of oonstitutinga stop forthe plate 90, see Fig. '102 Another gate, generally indicated by numeral 93, similar l provided, thesaine having in place of a plate similar'to 90a, depending bent arms 93d striking against the upright brackets ,93B

. when in the position shown in Fig. 10.

rThis gate 93 comprises i 'to shaft 93d which carries the bevel gear 93 the yoke-93e tainted meshing with bevel gear 94*l mounted on shaft 94b to which is attached the operating handle 94. Suitable bearings are provided for shaft"94` and tube 911. Beyond the gate 93 are loca-ted the finishing rolls 97, the

same comprising 'angular'ly disposed pairs of rollers 97, the same being provided-with `in the art position shown in Eig. 4,

eing' skew mounted,

in construction, is

alined grooves and used in combination with a pair carrying a plurality of sizing mandrels. This specific construction being old, l doynot find it necessary to describe the saine herein, as it is familiar to those skilled and does not form an integral part of this invention. In the operation of the gates 90 and 93, after the tube 76 has been drawn over the mandrel 45, it is conveyed by the rollers 80 past the gate 90, which is in the position shown in vdotted lines in Fig. 10, for example, and against gate 93 which is in closed pos'tion, shown in full lines in Fig. 10. After passed the gate 90 the operator at B signals to the operator at A to releaseliis mandrel bar 46 from the jaws 29, whereupon the conveyer rolls 14 convey it past the planishing rolls 2l until it abuts against gate 90 `which has been closed by the operator at B. It', upon its arrival there, the mandrel is 1ntact, and has not been broken, he raises gate 93 and the tube 76 is allowed to pass to the finishing rolls 97. This permits inspection by operator at B to prevent possibility of passage to rolls 97 of a tube with a mandrel inside whichwould destroy or damage the rolls. At the same time a new tube blank or billet is dropped on the rolls la? and the operator at closes the'gates 5@ tiiereby Amoving guide rollers 60 to position engaging arranged todraw a tube over saidinandrel. operating lever 91,1 v

In appara-tus of the class described, rolling members, a mandrel located adjacent and between said rolls, and means to drive said rolls, the latter` being constructed and arranged to rotate and draw a tube over said mandrel.

3. ln apparatusof the class described, rolls,.meaiis to drive said rolls, a bar, a` mandrel carried thereby and located'adja-A cent and between said rolls, saidrolls being constructed and arranged to rotate and draw a tube overl saidinandrel. i

4. .ln apparatus of the classdescribed, rolls, means to drive said rolls, a bar a mandrel carried thereby and located adjacent and betweensaid rolls, said rolls being constructed and' arranged to rotateanddra'w a tube over said mandrel, and means to hold said bar against the tension of said drawing.

5. :in apparatus of the' class described,

susceptible of a number omodiiications andi the tube has ico Leaders and constructed and arranged as a stop for a mandrel carrying bar or the like after passage thereby of said tube.

19. In apparatus of the class described, rolls, means to convey a tube thereto, means to convey a tube therefrom, a gate operable to permit or prevent said first named movement, a second gate spaced fronsaid rolls .and arranged to limit said second named movement of said tube, third gate located between said rolls and said second gate and constructed and arranged as a stop for a mandrel carrying bar or the like after passage thereby of said tube, and means to operate said second and third gates.

20. In apparatus of the class described, rolls, means to convey a tube thereto, means to convey a tube therefrom, a gate operable to permit or prevent said first named movement, a second gate spaced from said rolls and arranged to limit said second named movement of said tube, a third gate loca-ted between said rolls and said second gate and constructed and arranged as a stop for a mandrel carrying bar or the like after passage thereby of said tube, and means to operate said second and third gates, said means comprising operating handles located adjacent each other.

' 9,1. In apparatus of the class described, planishing rolls and conveyer rolls, gate members interposed between said planishing 'and conveyer rolls, means te gsimultaneously move said gate membersftoward or from each other, said means comprising a rotatable shaft having oppositely threaded portions, and means to rotate said shaft in either direction, said last named means comprising a rotatable shaft and a manually operable member carried thereby.

22. In apparatus of the class described, a gate comprising members movable toward or from each other, said members being carried by carrier blocks, a rotatable shaft having oppositely threaded portions, one of said portions engaging each of said blocks, means to rotate said shaft, gripping rollers carried by said blocks, and means to rotate said rollers in opposite directions;

23. In apparatus of the class described, a gate comprising members movable toward or from each other, said members being carried by carrier blocks, a rotatable shaft having oppositely threaded portions, one of said portions engaging each of said blocks, means to rotate said shaft, gripping rollers carried by said blocks, means to rotate said rollers in opposite directions, and spring yielding means contacting With said blocks, said gripping rolls being mounted for ,limited movement relative to said blocks against the action o'f said spring members.

In testimony whereof, I have subscibed m name.

y r eno. J. THUsT. Witnesses Jos. H. Punmnes, D. G. lVIUsnNHenman.v 

